Escape link name for DocBook.

Thanks to Martin Brown for pointing out the bug, and the obvious
solution.

(cherry picked from commit 06e2669b35)

src/insets/InsetHyperlink.cpp

@@ -22,6 +22,7 @@
 #include "LaTeXFeatures.h"
 #include "OutputParams.h"
 #include "output_xhtml.h"
+#include "sgml.h"
 
 #include "support/docstream.h"
 #include "support/FileName.h"
@@ -232,7 +233,7 @@ int InsetHyperlink::docbook(odocstream & os, OutputParams const &) const
 	os << "<ulink url=\""
 	   << subst(getParam("target"), from_ascii("&"), from_ascii("&amp;"))
 	   << "\">"
-	   << getParam("name")
+	   << sgml::escapeString(getParam("name"))
 	   << "</ulink>";
 	return 0;
 }

status.22x

@@ -112,6 +112,10 @@ What's new
     set to [None] or OT1 but the global default is T1.
   # Quote type ignored for LyXHTML: always "English" quotes used. 
 
+- Output correct identifier for DocBook XML.
+
+- Correctly escape hyperlinks for DocBook output.
+
 
 * LYX2LYX